Improvement in grinding-machines



2 Sheets-Sheet 1. L. OTIS.

GRINDING- MACHINE.

Patented Sept.19,1876.

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EIERS. PHOTO-LITHQGRAPMER, WASHINGTON. D Q

z Sheets-Sheet z. I. L. OTIS.

amumnwmcmm. No.18Z,Z84. Patented Sept.19,1876.

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N.FETERS, PHOTD-LITHOGRAPHER, WASHINGTON. D '1.

UNITED STATES PATENT QFFIGE.

JOHN L. oTIS, OF LEEDS, MASSACHUSETTS.

IMPROVEMENT IN GRINDING4MACHINES.

-, Specification'forming part of Letters Patent No. 182,284., datedSeptember 19, 1876; application filed July 10,1876. I

To all whom it may concern:

Be it known that I, J OHN L. 011s, of Leeds, in the county of Hampshireand State of Massachusetts, have invented certain new and' usefulImprovements pertaining to a Grinding-Machine, of which the followingisa specification, reference being had to the accompanying drawings,where- Figure 1 is a top view. Fig. 2 is a side view. Fig. 3 is an endview. Fig. 4 is a par tial section on plane a: .90. Fig. 5 is a sectionof the grinding-wheel. Fig.6 is a view of a planer-knife such asthemachine grinds.

I will first describe the machine, and then specify the features ofinvention in the claims.

The letter a denotes the table; b, awaysblock pivoted thereon by meansof pin or screw 0. lengthwise of the Ways-block, its reciprocationsgiven by the pit-man e pivoted to the rotating disk f. g denotes arest-block, moved toward and from the grinding-Wheel by the screw it. 1)denotes a rest pivoted to the rest-block, partially rotatory, its angleof adjustment to the grinding-wheel governed 'by'the arm j moving on therack is, which is slotted andpierced' bythe set-screw Z. m denotes a.planer-knife under process of being ground to an edge, being fastenedmeanwhile to the rest by headed screws n n piercing the mortises in theplanerknife and in the rest, and bearing the thumbnuts 0 0. The letterspp denote a gage pivoted to the rest andcapable of swinging up, as shownin Fig. 2, to regulate the setting of cl denotes a slide, reciprocatingstock, relatively to the grinder, can be adjusted at pleasure, thusdetermining at pleasure the concavity of the bevel which forms one sideof the edge.

Another feature of the invention consists in the wheel and gagescombined With the rest,

and operating to allow the user to set the knife to position forgrinding by its edge.

1 claim as my invention- 1. In combination, a flanged grinding-wheel,

1', a rest, 2', traveling across the grinding-face thereof, and aways-block, b, pivotally adjustable with reference to suchgrinding-face, all

substantially as described, and for the purpose set forth.

2. In combination, the grinding-wheel 1', the rest 71, and the pivotedgage 1), moving on and 011' the edge'of the blade to be sharpened, allsubstantially as described.

JOHN L. OTIS.

Witnesses:

C. E. STEVENS, L. B. FIELD.

